I've had the perception that people have dug themselves into a sort of epistemic rabbit hole where it's in principle impossible for me to signal that I'm right, independently of whether or not I am.

At the moment Eliezer has the goal of doing Angel investing to prove to the world that he has high skill at judging the merit of ideas. Without achievements that aren't easily fakeable it's hard to signal that you are right.

But the great thing isn't that you have to send a reliably signal that you are right to get people on LW to listen to you and engage with your arguments.

Certainly the odds are against me being able to communicate it, when nobody else has been able to :D. But I still think that there's some hope. I'm at something of a loss as to how to proceed.

Keep a journal yourself about your attempts to explain it to reflect on what works and what doesn't. Journal about how you use your productivity strategy. Journaling is a way to develop semantics to speak about an effect for which you lack words.

Try having 1-1 interactions where you communicate your ideas and have feedback about where the other person get's lost.